The 1291894 is an Ex i-Resistance isolator designed for the intrinsically safe operation of Pt 100 resistance thermometers using 2, 3, or 4-conductor technology and resistance-type sensors. It features primary brand Phoenix Contact and is equipped with a partition plate to maintain Ex i isolating distances when mounted alongside non-Ex i devices on a DIN rail. The device functions as a signal conditioner, offering capabilities such as separating, converting, filtering, amplifying, and switching interface signals to ensure reliable and safe sensor integration in hazardous environments.
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